Grain-cleaner.



M. DAVIS.

.GRAIN CLEANER.

APPLICATION FILED Dic. I. I9I1.

1 ,27 1,5%5, Patented July 9, 1918.

2 SHEETS-SHEET I.

.m I y@ IVI. DAVIS.

GRAIN CLEANER.

APFLlcATloN FILED DEC. 1. umA

Patented July 9, 1918;

`2 SHEETS-SHEET 2.

il? Z7 Z5 ,7/

MONROE DAVIS, OE ENID, OKLAHOMA GRAIN-CLEANER.

Specication of Letters Patent. i Patented July 9, 1918.

Application filed December 1, 1917. Serial No. 204,809.

To all whom t may concern:

Be it known that I, MONROE DAVIS, a citizen of the United States, residing at Enid, in the county of Garfield and State of Oklahoma, have invented certain new and useful Improvements in Grain-Cleaners; and I do declare the following to be a full, clear and exact description of the invention, such as will enable others skilled in the art to ywhich it appertains to make and use the same. n

My invention has for its object to provide an extremely simple and inexpensive, yet a highly eiiicient grain cleaner for use upon threshing machines, the device being particularly adapted for use upon machines employing a vertical elevator for the threshed grain, an inclined pipe into which the elevator discharges, a vertical sacking pipe into whose side said inclined pipe delivers and a suction conduit leading from the upper end of said sacking pipe.

With the foregoing general obj ect in view, the invention resides in the novel features of construction and unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which form a part of this specification and in which Figure 1 is a perspective view showing the application of my invention to a thresher of the type above suggested;

Fig. 2 is a longitudinal section through the inclined grain pipe and the cleaning means;

Fig. 3 is a horizontal section on the plane of the line 3 3 of Fig. 2; and

Fig. 4 is a transverse section on the plane of the line 4-4 of Fig. 2.

In the drawings above briefly described, the numeral 1 designates a vertical housing in which an elevator 2 operates, said elevator serving to move the threshed grain upwardly through the housing 1 and to discharge this grain into the upper end of an inclined grain pipe 3. The lower end of pipe 3 discharges into the side of a vertical sacking pipe 4 whose upper end is provided with a suction conduit 5 leading to a fan housing 6 in which suction iscreated by a fan 7.' Thelower end of the sacking pipe 4 is provided with any preferred means S for connecting the sacks thereto and air is admitted into this pipe through the an# miler .space 9 at the upper and 0f Said means,

whereby any fine particles of dust which might otherwise be discharged with the grain, may be carried off with the current of air which enters at 9 and rises through the pipe 4, due to the suction of the conduit 5. It has been found that the separation effected by this current of air, however, is insuflicient, and the present invention therefore provides other separating means in the The fiat bottom 10 of pipe 3 is provided at longitudinally spaced points with air inlet slots 11 which extend throughout its width, and a plurality of inclined plates 12 are positioned in said pipe above these slots, the upper ends of said plates being secured to the bottom 10 at points spaced upwardly along the latter from the slots, and said plates diverge downwardly with the bottom as shown clearly in Figs. 1 and 2. The lower ends of the several plates overlie the upper ends of the adjacent plates in spaced relation thereto and by this means it will be obvious that the grain passing through the pipe 3 must drop from each plate 12 onto the next plate as indicated by the light arrows in Fig. 2. The grain is thus constrained to drop through the inclined sheets of air which are admitted through the slots 11, the direction of travel of this air being indicated by the heavy arrows in Fig. 2. By this operation, it will be obvious that any dust and chaff in the grain, will be carried therefrom by the currents of air, whereas the cleaned grain will be discharged through the sacking pipe 4.

For the purpose of controlling the amount of air entering through the slots 11, flat valve plates 13 contact with the underside of the bottom 10, said plates being slidable over said slots to vary the active area thereof. Any preferred means such as the slot and bolt connections 14, may be em- .ployed for holding the plates 13 in adjusted position.

From the foregoing, taken in connection with the accompanying drawings, it will be obvious that although my invention is of extremely simple and inexpensive nature, it will' be highly efficient and durable. Since probably the best results are obtained from the several specific details shown and described, these details will preferably be employed, but I wish it vunderstood that within the scope of the invention as claimed, numerous minor changes may well be made.

I claim:

1. In a grain cleaner, the combi-nationof a threshed grain elevator, an inclinedpipe into Whose upper end said elevator discharges, a final vertically disposed grain cleaningv pipe'fintowhose side said incl-ined" pipe discharges at its lower end, and asiletion conduit connected to said" gra-in cleaning pipe above saidinclinedpipe; together with mea-ns for directing *inclined sheets of air through the bottom of said inclined pipe toward the deliveryend of the latter and for constrainingthe'grainJ to pass through said sheets ofa'i'rl 2. In a= grain cleaner, the combination of a grain' pipe inclined downwardly to itsl dehavingin its bott-01nal plurality 'of longitudi- Gpl'esroffthis patezxitlay be obtained foxffveg cents each, by addressing washi'ngwnamfc-W nally spaced air inlet openings extending substantial-ly throughout its Width, a plurality of inclined plates in said pipe and secured at their upper ends to said bottom at, points spaced toward its upper end from said openings, said plates diverging downwardly with said bottom and the lower ends of said plates overlapping the upper ends of adjacent plates inspaced relation thereto, and means for prodi-icing' inward currents of air ithrough said air inlet openings.

Iirtestimony whereof ArkI` have' hereunto set Witnesses:

MN'RE DAVIS. Witnesses;

Griso. D. vWILSON, J5 KEYS.

the` Commissioner of P atn'tfs'g- 30 Vmy'li'an'd'in tlie'presence' of two' subscribing 

